Effects of High Temperature Gas Environments(H2, Pure Air, Ar, Vacuum) on Slow Strain Rate Tensile Properties at 700°C of TiAl Alloy

2007 ◽  
pp. 1007-1010
Author(s):  
Y. Iino ◽  
M. Itoh ◽  
M. Omote ◽  
Y. Yamaguchi ◽  
T. Ban
Keyword(s):  
High Temperature ◽  
Strain Rate ◽  
Tensile Properties ◽  
Tial Alloy ◽  
Slow Strain Rate ◽  
High Temperature Gas

Effects of High Temperature Gas Environments(H2, Pure Air, Ar, Vacuum) on Slow Strain Rate Tensile Properties at 700°C of TiAl Alloy

2007 ◽  
Vol 345-346 ◽  
pp. 1007-1010
Author(s):  
Y. Iino ◽  
M. Itoh ◽  
M. Omote ◽  
Y. Yamaguchi ◽  
T. Ban
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Ultimate Tensile Strength ◽  
Tensile Test ◽  
Strain Rate ◽  
Tial Alloy ◽  
Tensile Deformation ◽  
Strain Rates ◽  
High Elongation ◽  
High Temperature Gas

Tensile test of TiAl alloy was carried out in 700oC gas environment(H2, pure air, Ar, vacuum) at three strain rates, 2.8x10-4, 2.8x10-5, and 2.8x10-6s-1. With decreasing strain rate, the ultimate tensile strength decreased in all environments similarly. However, elongation to fracture differed from each environment. With decreasing strain rate, the elongation to fracture in vacuum and Ar increased slightly, that in H2 increased much and that in pure air significantly. The reasons of such behaviour are not known. One of the reasons for high elongation to fracture would be formation of multiple microcracks in H2 and pure air on the gauge surface of the specimen during tensile deformation.

Effect of High Temperature Caliber Rolling on Microstructure and Room Temperature Tensile Properties of Mg-3Al-1Zn (AZ31) Alloy

2013 ◽  
Vol 209 ◽  
pp. 6-9 ◽  
Author(s):  
Rajendra Doiphode ◽  
S.V.S. Narayana Murty ◽  
Nityanand Prabhu ◽  
Bhagwati Prasad Kashyap
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Yield Strength ◽  
Strain Rate ◽  
Tensile Properties ◽  
Room Temperature ◽  
Tensile Tests ◽  
Az31 Alloy ◽  
Rolling Temperature ◽  
Grain Sizes

Mg-3Al-1Zn (AZ31) alloy was caliber rolled at 250, 300, 350, 400 and 450 °C. The effects of caliber rolling temperature on the microstructure and tensile properties were investigated. The room temperature tensile tests were carried out to failure at a strain rate of 1 x 10-4s-1. The nature of stress-strain curves obtained was found to vary with the temperature employed in caliber rolling. The yield strength and tensile strength followed a sinusoidal behaviour with increasing caliber rolling temperature but no such trend was noted in ductility. These variations in tensile properties were explained by the varying grain sizes obtained as a function of caliber rolling temperature.

High Temperature Tensile Properties of Mg-5Li-3Al-1.5Zn-2RE Alloys

2012 ◽  
Vol 182-183 ◽  
pp. 189-193
Author(s):  
Ting Qu Li ◽  
M. Gao ◽  
S.H. Wang ◽  
Zhan Yi Cao
Keyword(s):  
High Temperature ◽  
Strain Rate ◽  
Tensile Properties ◽  
Deformation Mechanism ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Fracture Elongation ◽  
Dominant Deformation Mechanism ◽  
High Temperature Tensile ◽  
High Temperature Tensile Properties

In this paper, the high temperature tensile properties of the LAZ532-2RE alloy prepared by hot extruded processing after vacuum casting was investaged. The tensile properties of the extruded LAZ532-2RE alloy specimens were tested at different temperature with different strain rate. The microstructures near the fractured surfaces were observed using microscope in order to investigate the dominant deformation mechanism. The activation energy was calculated to explain the high temperature deformation mechanism. The result indicated that the strength of LAZ532-2RE alloy was high at the temperature range from 398K to 423K. Meanwhile, the fracture elongation of the alloy reaches 121% at 523K under strain rate 1×10-3s-1.

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